David Neumann, MD
Gastroenterology · Oklahoma City, OKNPI 1043339575
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 98.7% of the total across 475 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 34 manufacturers reported payments, led by AbbVie at 41.1% of the total. 2025 is the largest year on record at $2,042, 3.4 times the $608 reported in 2019.
Across 475 payments — averaging $17.10 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$3K
- Takeda Pharmaceuticals U.S.A., Inc.$739
- Johnson & Johnson$552
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$309
- Gilead$292
- Pfizer$288
- plus $3K from 28 others
Across 18 payments — averaging $1036.59 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Otsuka Pharmaceutical Development & Commercialization, Inc.$11K
- Takeda Pharmaceuticals U.S.A., Inc.$7K
- Shire North American Group Inc$1K
What the payments were for
- Food & beverage$8,02399%
- Education$1021%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| AbbVie | 211 | $3,340 |
| Takeda Pharmaceuticals U.S.A., Inc. | 39 | $739 |
| Johnson & Johnson | 36 | $552 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 24 | $309 |
| Gilead | 20 | $292 |
| Pfizer | 12 | $288 |
| Sanofi | 14 | $251 |
| Bristol Myers Squibb | 18 | $246 |
| Janssen Scientific Affairs, LLC | 2 | $246 |
| QOL Medical, LLC | 14 | $236 |
| Lilly USA, LLC | 10 | $212 |
| Regeneron Healthcare Solutions, Inc. | 8 | $161 |
| Daiichi Sankyo Inc. | 8 | $142 |
| Ardelyx, Inc. | 8 | $136 |
| Ipsen Biopharmaceuticals, Inc | 6 | $105 |
| Enterra Medical, Inc. | 1 | $80 |
| Ironwood Pharmaceuticals, Inc | 5 | $78 |
| Medtronic | 2 | $77 |
| Redhill Biopharma Inc. | 5 | $70 |
| Celltrion USA Inc. | 3 | $70 |
| Intercept Pharmaceuticals, Inc. | 5 | $62 |
| Nestle Healthcare Nutrition Inc. | 3 | $57 |
| Pharmacosmos Therapeutics Inc. | 3 | $55 |
| Shire North American Group Inc | 3 | $54 |
| Aimmune Therapeutics, Inc. | 3 | $52 |
| Madrigal Pharmaceuticals | 2 | $50 |
| Ferring Pharmaceuticals Inc. | 2 | $33 |
| UCB, Inc. | 2 | $31 |
| Vivus LLC | 1 | $23 |
| Novo Nordisk | 1 | $20 |
| Merck | 1 | $18 |
| Fresenius Kabi USA, LLC | 1 | $16 |
| AMAG Pharmaceuticals, Inc. | 1 | $13 |
| Phathom Pharmaceuticals, Inc. | 1 | $10 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
How this compares
$8,125 in reported general payments places this provider in the 65th percentile of 133 gastroenterology providers in Oklahoma.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Humira(Cf) PenAdalimumab | 57 | $479,661 |
| CreonLipase/Protease/Amylase | 103 | $321,992 |
| Skyrizi On-BodyRisankizumab-Rzaa | 13 | $267,385 |
| ZenpepLipase/Protease/Amylase | 16 | $75,067 |
| RinvoqUpadacitinib | 11 | $68,337 |
| Mesalamine | 144 | $56,342 |
| ViberziEluxadoline | 21 | $53,935 |
| Sandostatin Lar DepotOctreotide Acetate,mi-Spheres | 12 | $52,753 |
| RelistorMethylnaltrexone Bromide | 11 | $22,864 |
| Dexlansoprazole DrDexlansoprazole | 76 | $22,486 |
| TrulancePlecanatide | 38 | $21,277 |
| LinzessLinaclotide | 29 | $18,256 |
| PentasaMesalamine | 12 | $16,892 |
| Mesalamine ErMesalamine | 70 | $14,369 |
| Ursodiol | 134 | $14,223 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| AbbVieCreon, Rinvoq, Viberzi, Linzess | $3,340 | $462,519164 claims |
| Aimmune Therapeutics, Inc.Zenpep | $52 | $75,06716 claims |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLCRelistor, Trulance | $309 | $44,14149 claims |
| Novo NordiskOzempic | $20 | $12,93213 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 65th percentile of 133 gastroenterology providers in Oklahoma.
Other gastroenterology in Oklahoma City
- George SalemOklahoma City$1.2M
- Tauseef AliOklahoma City$536K
- Pooja SinghalOklahoma City$140K
- Hussein BitarOklahoma City$120K
- Trushar PatelOklahoma City$49K
- Matthew McBrideOklahoma City$33K
- Sanjay SikkaOklahoma City$31K
- Tony TranOklahoma City$11K
- Ahmad Al-TaeeOklahoma City$11K
- Sumit WaliaOklahoma City$10K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.